Surveying FS Instruments and Procedures, Geodetic/ Control Systems, and GPS 2024/2025 passed

Surveying FS Instruments and Procedures, Geodetic/ Control Systems, and GPS How does plane surveying differ from geodetic surveying? - correct answer the way it treats the curvature of the earth. Plane surveying is conducted on a horizontal plane while geodetic surveying takes the curvature into account What is the Standard railroad gauge within the United States? - correct answer 4' 8.5" What is a miner's inch? - correct answer a rate of flow of about 1.5 feet cubed per minute What kind of chart should a surveyor use to determine approximate magnetic declination in an area? - correct answer isogonic chart What is secular variation? - correct answer the gradual change in magnetic declination that follows cycles of around 300 years Does refraction make objects appear higher or lower than they really are? - correct answer higher The image produced by a particular instrument is obscured by various hues of light. What is the name given to this condition? - correct answer chromatic aberration As elevation increases, barometric pressure...? - correct answer decreases A difference in altitude of 1000 ft will cause a difference in atmospheric pressure of what? - correct answer 1 inch of mercury (Hg) What does a repeating instrument allow the operator to do? - correct answer accumulate the measurements of an angle on the plate, adding each successive angle to the sum of those already turned